This leads to a position that has never been tested in classical grandmaster play.
7... c6d4 Despite being a typical move, the knight exchange is rarely played in this order of moves. It will certainly become more popular after this game. 8. d1d4 The natural capture. 8... b7b5  9. f1e2 A smart move, keeping the option of castling on both flanks. 9... c8b7 